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A 10, 10 kVA, 460/120 V, 60 Hz transformer has an efficiency of 96% when it delivers 9 kW at 0.9 power factor. This
A 10, 10 kVA, 460/120 V, 60 Hz transformer has an efficiency of 96% when it delivers 9 kW at 0.9 power factor. This transformer is connected as an autotransformer to supply load to a 460 V circuit from a 580 V source. (a) Show the autotransformer connection. (b) Determine the maximum kVA the autotransformer can supply to the 460 V circuit. (c) Determine the efficiency of the autotransformer for full load at 0.9 power factor.
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Thermodynamics An Engineering Approach
Authors: Yunus A. Cengel, Michael A. Boles
8th edition
73398179, 978-0073398174
